Osaka beats qualifier to reach quarterfinals at Pan Pacific Open

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Naomi Osaka. (Jason DeCrow/AP)

OSAKA, Japan — Top-seeded Naomi Osaka reached the quarterfinals at the Pan Pacific Open by beating qualifier Viktoriya Tomova 7-5, 6-3 on Wednesday.

Osaka, who was broken twice early in the match, is looking to win her first title in her hometown after finishing runner-up in 2016 and 2018.

She will next meet either Yulia Putintseva or Russian qualifier Varvara Flink.

Also, fourth-seeded Angelique Kerber won her first match since Wimbledon, beating American qualifier Nicole Gibbs 6-2, 6-4.

"The goal now is to finish the year as well as I can, to put all the energy which I have into this run in Asia and to play well in the next few weeks," Kerber said.

Kerber will next face Madison Keys, who defeated Zarina Diyas 5-7, 6-0, 6-4.

"I know Madison really well, so I know what to expect," Kerber said. "It will be interesting. We both know we have to play our best against each other."

Elise Mertens also advanced, beating Hsieh Su-Wei 6-3, 1-6, 6-2.

At the Korea Open in Seoul, second-seeded Ekaterina Alexandrova recovered well to beat Kristyna Pliskova 3-6, 6-3, 6-4 and reach the quarterfinals.

Alexandrova will next play Kristie Ahn. The American advanced by beating Ana Bogdan of Romania 0-6, 6-4, 7-6 (2).

Magda Linette also reached the quarterfinals, defeating Anastasia Potapova 7-5, 7-6 (4). The fourth-seeded Linette will next meet Kirsten Flipkens, who upset seventh-seeded Margarita Gasparyan 6-3, 7-5.

At the Guangzhou International in China, Marie Bouzkova of the Czech Republic advanced to the quarterfinals after top-seeded Elina Svitolina retired due to pain in her right knee when the Ukrainian was trailing 6-4, 4-3.

Third-ranked Svitolina received medical treatment at 3-2 in the second set and then came back to hold for 3-3. But she was still struggling with her knee and after saving two of three break points at 4-3 she finally retired.

Third-seeded Sofia Kenin of the United States moved into the last eight by beating Katarina Zavatska 6-4, 6-2.

Kenin will take on qualifier Jasmine Paolini after the Italian upset sixth-seeded Saisai Zheng 7-5, 3-6, 7-5.

Viktorija Golubic came back to beat Katerina Siniakova 4-6, 7-5, 6-0 and will take on Shuai Zhang of China in the quarterfinals after the fourth-seeded player beat Andrea Petkovic 7-5, 6-4.

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